JP3271837B2 - Mid-mounted riding lawn mower - Google Patents
Mid-mounted riding lawn mowerInfo
- Publication number
- JP3271837B2 JP3271837B2 JP24404293A JP24404293A JP3271837B2 JP 3271837 B2 JP3271837 B2 JP 3271837B2 JP 24404293 A JP24404293 A JP 24404293A JP 24404293 A JP24404293 A JP 24404293A JP 3271837 B2 JP3271837 B2 JP 3271837B2
- Authority
- JP
- Japan
- Prior art keywords
- mower
- support arm
- horizontal axis
- arm
- link
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
- A01D34/74—Cutting-height adjustment
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D2101/00—Lawn-mowers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S56/00—Harvesters
- Y10S56/22—Underslung yieldable rotary mower
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Harvester Elements (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はミッドマウント型の乗用
型芝刈機において、機体フレームへのモーアの支持構造
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for supporting a mower on an airframe of a mid-mount type riding lawn mower.
【０００２】[0002]
【従来の技術】乗用型芝刈機におけるモーアの支持構造
の一例が、実開昭６３−２６２２１号公報に開示されて
いる。この構造においては、機体フレームの前側下部の
横軸芯（前記公報の第１図中のＸ）周りに、支持アーム
（前記公報の第２図中の３１）を後向きに上下揺動操作
自在に支持して、モーア（前記公報の第１図中のＣ）の
後側の部分に支持アームの先端側を枢支連結し、機体フ
レーム（前記公報の第１図中の３５ａ，３５ｂ）とモー
アの前部とを、一対のリンク（前記公報の第１図中の３
６ａ，３７）により枢支連結している。2. Description of the Related Art An example of a mower support structure in a riding lawn mower is disclosed in Japanese Utility Model Laid-Open No. 63-22221. In this structure, the support arm (31 in FIG. 2 of the above-mentioned publication) can freely swing vertically around the horizontal axis (X in FIG. 1 of the above-mentioned publication) at the lower front side of the body frame. The supporting arm is pivotally connected to the rear part of the mower (C in FIG. 1 of the above-mentioned publication) to support it, and is connected to the body frame (35a, 35b in FIG. 1 of the above-mentioned publication) and the mower. Is connected to a pair of links (3 in FIG. 1 of the above publication).
6a, 37).
【０００３】そして、一方のリンク（前記公報の第１図
中の３６ａ）に長孔（前記公報の第１図中の３８ａ）を
設け、支持アームのピン（前記公報の第１図中の３９）
を長孔に挿入して、この一方のリンクが支持アームに対
して長孔の範囲内で移動及び揺動できるように構成して
いる。これにより支持アームを上下動操作すると、支持
アーム及び一対のリンクの作用によって、モーアを上下
に平行移動操作することができる。An elongated hole (38a in FIG. 1 of the above publication) is provided in one link (36a in FIG. 1 of the above publication), and a pin of a support arm (39a in FIG. 1 of the above publication) is provided. )
Is inserted into the long hole so that this one link can move and swing within the range of the long hole with respect to the support arm. Thus, when the support arm is vertically moved, the mower can be vertically translated by the action of the support arm and the pair of links.
【０００４】[0004]
【発明が解決しようとする課題】前述の構造においては
支持アームを上下動操作した場合、一方のリンク（前記
公報の第１図中の３６ａ）の長孔（前記公報の第１図中
の３８ａ）内を、支持アームのピン（前記公報の第１図
中の３９）が移動し、このリンクが支持アームに対して
移動及び揺動して、支持アームとリンクの移動軌跡の差
が吸収される。In the above structure, when the support arm is moved up and down, one link (36a in FIG. 1 of the above publication) has a long hole (38a in FIG. 1 of the above publication). ), The pin of the support arm (39 in FIG. 1 of the above publication) moves, and this link moves and swings with respect to the support arm, so that the difference in the movement locus between the support arm and the link is absorbed. You.
【０００５】しかしながら、前述のようにリンクの長孔
内を支持アームのピンが移動する構造であると、長期の
使用による磨耗等により長孔に対してピンが傾斜し長孔
内をピンが移動し難くなる、いわゆるコジレ現象が発生
し易い。そして、乗用型芝刈機では作業中においてモー
ア付近に多くの刈芝や土等が飛び散っているので、この
ような刈芝や土等が長孔内に入り込むと、コジレ現象が
さらに発生し易くなり、モーアの上下動操作が重くなっ
てしまう。本発明は前述のようなモーアの上下動構造を
持つミッドマウント型の乗用型芝刈機において、モーア
の上下動操作に伴うコジレ現象を抑えることを目的とし
ている。However, if the pin of the support arm moves in the long hole of the link as described above, the pin is inclined with respect to the long hole due to wear or the like due to long-term use, and the pin moves in the long hole. That is, the so-called koji phenomenon is easily generated. In the riding lawn mower, a lot of lawn grass and soil are scattered near the mower during work, so if such lawn grass and soil enter the long hole, the koji phenomenon is more likely to occur. The vertical movement of the mower becomes heavy. SUMMARY OF THE INVENTION It is an object of the present invention to suppress a kore phenomenon caused by a vertical movement operation of a mower in a riding mower of a mid-mount type having a vertical movement structure of a mower as described above.
【０００６】[0006]
【課題を解決するための手段】本発明の特徴は以上のよ
うなミッドマウント型の乗用型芝刈機において、次のよ
うに構成することにある。つまり、機体フレームの前側
下部又は後側下部の機体左右方向の横軸芯周りに、支持
アームを上下揺動操作自在に支持して、支持アームを機
体フレームの中央下側に配置されたモーア側に延出し、
モーアの前側又は後側の部分における支持アームの横軸
芯とは反対側の部分に、支持アームの先端側を枢支連結
すると共に、モーアの前側又は後側の部分において、支
持アームの先端側が枢支連結された部分とは反対側の部
分の機体左右方向の横軸芯周りに、連係リンクを前後揺
動自在に支持し、支持アームの中程部の機体左右方向の
横軸芯周りに、天秤アームを上下揺動自在に支持して、
天秤アームの一端と連係リンクの揺動端とを枢支連結
し、天秤アームの他端を、機体フレーム側の固定部の下
面に前後移動自在に下側から当て付けてある。A feature of the present invention resides in the following configuration of the above-mentioned mid-mounted riding lawn mower. In other words, the support arm is supported so as to be able to swing up and down around the horizontal axis of the fuselage frame at the lower front side or lower rear side of the fuselage frame, and the support arm is located at the lower center of the fuselage frame at the lower side of the mower side. Extended to
The distal end of the support arm is pivotally connected to the portion of the front or rear side of the mower opposite to the horizontal axis of the support arm, and the distal end of the support arm is located at the front or rear portion of the mower. The link is supported so as to be able to swing back and forth around the horizontal axis of the body on the side opposite to the pivotally connected part, and around the horizontal axis of the body in the middle of the support arm. , Supporting the balance arm up and down freely,
One end of the balance arm is pivotally connected to the swinging end of the link, and the other end of the balance arm is abutted from below on the lower surface of the fixed portion on the body frame side so as to be movable back and forth.
【０００７】[0007]
【作用】本発明において例えば図１及び図２（イ）に示
すように、支持アーム７の横軸芯Ｐ１を機体フレーム３
の前側下部に配置し、連係リンク８をモーア６の前側に
配置したと仮定する。この場合、図１及び図２（イ）に
示すように支持アーム７を所定の位置に固定している
と、モーア６の後部は支持アーム７により支持される。
そして、モーア６が支持アーム７との連結点周りに下降
しようとして、天秤アーム９が紙面時計方向に揺動しよ
うとする状態が、天秤アーム９の他端の固定部１０への
当たりによって止められることにより、モーア６の前部
が支持される。この状態から支持アーム７を上方に揺動
操作してモーア６の後部を持ち上げていくと、これに伴
い支持アーム７の横軸芯Ｐ３の位置及び天秤アーム９も
上昇していくので、天秤アーム９の他端が機体フレーム
３の固定部１０に沿って紙面左方に移動していく状態と
なり、天秤アーム９が紙面反時計方向に揺動して、モー
ア６の前部が持ち上げられていくのである。In the present invention, for example, as shown in FIGS. 1 and 2A, the horizontal axis P1 of the support arm 7 is
, And the link 8 is arranged on the front side of the mower 6. In this case, when the support arm 7 is fixed at a predetermined position as shown in FIGS. 1 and 2A, the rear portion of the mower 6 is supported by the support arm 7.
Then, the state in which the balance arm 9 is about to swing clockwise as the mower 6 descends around the connection point with the support arm 7 is stopped by the contact of the other end of the balance arm 9 with the fixing portion 10. Thereby, the front part of the mower 6 is supported. When the rear part of the mower 6 is lifted by swinging the support arm 7 upward from this state, the position of the horizontal axis P3 of the support arm 7 and the balance arm 9 are also raised. The other end of 9 moves to the left of the drawing along the fixing portion 10 of the body frame 3, the balance arm 9 swings counterclockwise in the drawing, and the front of the mower 6 is lifted. It is.
【０００８】以上のように本発明では、天秤アーム９の
他端と機体フレーム３の固定部１０との接触部分がいわ
ゆる摺動構造となっているが、これ以外の部分（支持ア
ーム７とモーア６との連結部分等）は全て、コジレ現象
の発生し難い軸支持による揺動構造となっている。そし
て、天秤アーム９の他端と機体フレーム３の固定部１０
との接触部分においては、天秤アーム９の他端が機体フ
レーム３の固定部１０の下面に下側から当て付けられて
いるだけで、天秤アーム９の他端の下側及び固定部１０
の下面の下側は開放された状態となっている。これによ
り、天秤アーム９の他端が固定部１０の下面に傾斜して
当たったとしても、天秤アーム９の他端はこれに関係な
く固定部１０の下面に沿って移動することができるので
ある。As described above, according to the present invention, the contact portion between the other end of the balance arm 9 and the fixing portion 10 of the body frame 3 has a so-called sliding structure, but other portions (the support arm 7 and the mower) 6 has a swinging structure with a shaft support that is less likely to cause the koji phenomenon. Then, the other end of the balance arm 9 and the fixing portion 10 of the body frame 3
In the contact portion with the balance arm 9, the other end of the balance arm 9 is merely applied to the lower surface of the fixing portion 10 of the body frame 3 from below, and the lower end of the balance arm 9 and the fixing portion 10
The lower side of the lower surface is open. As a result, even if the other end of the balance arm 9 hits the lower surface of the fixed portion 10 at an angle, the other end of the balance arm 9 can move along the lower surface of the fixed portion 10 regardless of this. .
【０００９】[0009]
【発明の効果】以上のように、モーアの上下動部分の移
動軌跡の差を吸収する構造を、コジレ現象の発生し易い
ピン及び長孔の融通構造ではなく、下側の開放された接
当の構造とすることにより、モーアを常に円滑に上下動
操作できるようになって、乗用型芝刈機の操作性を向上
させることができた。As described above, the structure for absorbing the difference in the movement trajectories of the up-and-down moving parts of the mower is not a pin-and-hole-flexible structure in which the kojile phenomenon is likely to occur, but a lower open contact. With this structure, the mower can always be moved up and down smoothly, and the operability of the riding lawn mower can be improved.
【００１０】[0010]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。図１に示すように、前輪１及び後輪２で支持した
機体フレーム３の前部にエンジン４、機体フレーム３の
後部に搭乗部５を備え、前輪１と後輪２の間にモーア６
を配置して乗用型芝刈機を構成している。Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, an engine 4 is provided at a front portion of a body frame 3 supported by a front wheel 1 and a rear wheel 2, and a riding section 5 is provided at a rear portion of the body frame 3, and a mower 6 is provided between the front wheel 1 and the rear wheel 2.
Are arranged to constitute a riding lawn mower.
【００１１】前輪１と後輪２との間において機体フレー
ム３にモーア６を支持しており、次のこのモーア６の支
持構造について説明する。図１及び図２（イ）に示すよ
うに、機体フレーム３の前側下部の機体左右方向の横軸
芯Ｐ１周りに、左右一対の支持アーム７を上下揺動自在
に支持して、支持アーム７を後側（モーア６側）に延出
し、モーア６の後側の部分に支持アーム７の先端側を枢
支連結している。The mower 6 is supported on the fuselage frame 3 between the front wheel 1 and the rear wheel 2, and the structure for supporting the mower 6 will be described below. As shown in FIGS. 1 and 2 (a), a pair of left and right support arms 7 are supported so as to be vertically swingable around a horizontal axis P1 in the horizontal direction of the body at the lower front side of the body frame 3. Is extended to the rear side (mower 6 side), and the distal end side of the support arm 7 is pivotally connected to the rear part of the mower 6.
【００１２】モーア６の前側の部分の機体左右方向の横
軸芯Ｐ２周りに連係リンク８を前後揺動自在に支持し、
支持アーム７の中程部の機体左右方向の横軸芯Ｐ３周り
に天秤アーム９を上下揺動自在に支持しており、天秤ア
ーム９の一端と連係リンク８の揺動端とを枢支連結して
いる。図２（イ）及び図３に示すように、機体フレーム
３の下部に支持板１０（固定部に相当）を固定し、支持
板１０の下面に樹脂コーティングを施している。そし
て、天秤アーム９の他端にローラー９ａを自由回転自在
に外嵌しており、この天秤アーム９のローラー９ａを、
支持板１０の下面に前後移動自在に下側から当て付けて
いる。A link 8 is supported on a front portion of the mower 6 around a horizontal axis P2 in the lateral direction of the machine so as to be swingable back and forth.
A balance arm 9 is supported in the middle part of the support arm 7 around a horizontal axis P3 in the lateral direction of the body so as to be vertically swingable, and one end of the balance arm 9 and a swing end of the link 8 are pivotally connected. are doing. As shown in FIGS. 2A and 3, a support plate 10 (corresponding to a fixing portion) is fixed to a lower portion of the body frame 3, and a resin coating is applied to a lower surface of the support plate 10. A roller 9a is fitted around the other end of the balance arm 9 so as to be freely rotatable, and the roller 9a of the balance arm 9 is
The lower surface of the support plate 10 is movably moved back and forth from below.
【００１３】図１に示すように搭乗部５の運転座席１１
の右側に、モーア６用の昇降レバー１２を備えており、
機体フレーム３の横軸芯Ｐ４周りに上下揺動自在に支持
された支持アーム１３と、昇降レバー１２とが連係ロッ
ド１４により連結され、支持アーム１３と支持アーム７
の先端とが連係リンク１５により連結されている。そし
て、支持アーム１３と連係リンク１５との連結部分に、
連係リンク１５の上方への移動を許すピン及び長孔（図
示せず）による融通構造を備えている。As shown in FIG. 1, the driver's seat 11 of the riding section 5
Is provided with a lifting lever 12 for the mower 6 on the right side of
A support arm 13 supported vertically swingably around a horizontal axis P4 of the body frame 3 and an elevating lever 12 are connected by a link rod 14, and the support arm 13 and the support arm 7 are connected.
Are connected by a link 15. Then, at the connecting portion between the support arm 13 and the link 15,
A flexible structure is provided with pins and slots (not shown) that allow the link 15 to move upward.
【００１４】図１及び図２（イ）は昇降レバー１２によ
りモーア６を最下降位置にまで下降操作した状態であ
る。この状態において、モーア６の後部は支持アーム７
及び連係リンク１５により吊り下げられて支持された状
態となっており、モーア６が支持アーム７との連結点周
りに下降しようとして、天秤アーム９が紙面時計方向に
揺動しようとする状態が、天秤アーム９のローラー９ａ
の支持板１０への当たりによって止められることによ
り、モーア６の前部が支持されている。FIGS. 1 and 2 (a) show a state in which the mower 6 has been moved down to the lowest position by the lifting lever 12. FIG. In this state, the rear of the mower 6 is
And the state where the mower 6 is going to descend around the connection point with the support arm 7 and the balance arm 9 is about to swing clockwise in the drawing. Roller 9a of balance arm 9
Is stopped by hitting the support plate 10 to support the front portion of the mower 6.
【００１５】この状態から昇降レバー１２を上昇側に操
作しモーア６を持ち上げていくと、図２（イ）から図２
（ロ）に示すように連係リンク１５の引き作用により、
支持アーム７が横軸芯Ｐ１周りに上方に揺動操作され
て、モーア６の後部が持ち上げられていく。これに伴い
支持アーム７の横軸芯Ｐ３の位置及び天秤アーム９も上
昇していくので、天秤アーム９のローラー９ａが機体フ
レーム３の支持板１０に沿って紙面左方に転がっていく
状態となり、天秤アーム９が紙面反時計方向に揺動し
て、モーア６の前部が持ち上げられていく。そして、図
２（ロ）に示すように昇降レバー１２を最上昇位置で固
定することにより、モーア６を最上昇位置で固定するこ
とができる。又、モーア６の最下降位置及び最上昇位置
の間の任意の複数位置において、図１に示す支持アーム
１３を下側から保持可能な保持機構（図示せず）を備え
て、モーア６の高さを調節できるように構成しており、
保持機構の調節ダイヤル１６を備えている。In this state, when the mower 6 is lifted by operating the lift lever 12 to the ascending side, FIG.
As shown in (b), by the pulling action of the link 15
The support arm 7 is pivoted upward about the horizontal axis P1, and the rear part of the mower 6 is lifted. Accordingly, the position of the horizontal axis P3 of the support arm 7 and the balance arm 9 also rise, so that the rollers 9a of the balance arm 9 roll to the left on the paper along the support plate 10 of the body frame 3. Then, the balance arm 9 swings counterclockwise in the drawing, and the front part of the mower 6 is lifted. The mower 6 can be fixed at the highest position by fixing the elevating lever 12 at the highest position as shown in FIG. Further, a holding mechanism (not shown) capable of holding the support arm 13 shown in FIG. 1 from below at any of a plurality of positions between the lowest position and the highest position of the mower 6 is provided. It is configured so that you can adjust the
An adjustment dial 16 for a holding mechanism is provided.
【００１６】図１に示すようにモーア６の前後左右に、
障害物の乗り越え用の４個の車輪１７を備えており、モ
ーア６を最下降位置に操作していても車輪１７は接地し
ないように設定されている。これにより、前側の車輪１
７が石等に乗り上げると、支持アーム７との連結点周り
にモーア６の前部が持ち上げられることになる。この場
合、この動作に伴って天秤アーム９が紙面反時計方向に
揺動することになるが、天秤アーム９のローラー９ａが
機体フレーム３の支持板１０から下方に離れるだけであ
り、モーア６の前部が抵抗なく持ち上がる。そして、後
側の車輪１７が石等に乗り上げた場合には、支持アーム
１３と連係リンク１５との連結部分に備えられる融通構
造により、モーア６の後部が抵抗なく持ち上がる。As shown in FIG.
It is provided with four wheels 17 for overcoming obstacles, and is set so that the wheels 17 do not touch the ground even when the mower 6 is operated to the lowest position. Thereby, the front wheel 1
When the vehicle 7 rides on a stone or the like, the front portion of the mower 6 is lifted around the connection point with the support arm 7. In this case, the balance arm 9 swings counterclockwise with the movement, but the roller 9a of the balance arm 9 only separates downward from the support plate 10 of the body frame 3 and the The front lifts without resistance. When the rear wheel 17 rides on a stone or the like, the rear portion of the mower 6 can be lifted without resistance due to the flexible structure provided at the connecting portion between the support arm 13 and the link 15.
【００１７】〔別実施例〕図１の実施例では、支持アー
ム７の横軸芯Ｐ１を機体フレーム３の前側下部に備えて
いるが、支持アーム７の横軸芯Ｐ１を機体フレーム３の
後側下部に備えてもよい。このように支持アーム７の横
軸芯Ｐ１を機体フレーム３の後側下部に備えると、支持
アーム７は前側（モーア６側）に延出され、モーア６の
前側の部分に支持アーム７の先端側が枢支連結されるこ
とになる。又、図１の構成では連係リンク８に対して後
側の支持アーム７の部分に横軸芯Ｐ３を設定している
が、図１の構成において連係リンク８に対して前側の支
持アーム７の部分に横軸芯Ｐ３を設定し、この横軸芯Ｐ
３周りに天秤アーム９を揺動自在に支持してもよい。[Alternative Embodiment] In the embodiment shown in FIG. 1, the horizontal axis P1 of the support arm 7 is provided at the lower front side of the body frame 3, but the horizontal axis P1 of the support arm 7 is provided behind the body frame 3. It may be provided on the lower side. When the horizontal axis P1 of the support arm 7 is provided at the lower rear part of the body frame 3 as described above, the support arm 7 extends forward (toward the mower 6), and the front end of the support arm 7 is attached to the front part of the mower 6. The sides will be pivotally connected. Further, in the configuration of FIG. 1, the horizontal axis P3 is set at the portion of the support arm 7 on the rear side with respect to the link 8; however, in the configuration of FIG. The horizontal axis P3 is set in the portion, and the horizontal axis P
The balance arm 9 may be swingably supported around 3.
【００１８】尚、特許請求の範囲の項に図面との対照を
便利にする為に符号を記すが、該記入により本発明は添
付図面の構成に限定されるものではない。In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.
【図１】乗用型芝刈機の全体側面図FIG. 1 is an overall side view of a riding lawn mower.
【図２】モーアを最下降位置及び最上昇位置に操作した
状態を示す側面図FIG. 2 is a side view showing a state where the mower is operated to a lowermost position and a highest position.
【図３】支持アーム及び機体フレームの天秤アーム及び
支持板付近の縦断背面図FIG. 3 is a longitudinal rear view of the vicinity of a support arm and a balance arm of a body frame and a support plate.
３ 機体フレーム ６ モーア ７ 支持アーム ８ 連係リンク ９ 天秤アーム １０ 機体フレームの固定部 Ｐ１，Ｐ２，Ｐ３ 横軸芯 3 Body frame 6 Mower 7 Support arm 8 Linkage link 9 Balance arm 10 Fixing part of body frame P1, P2, P3 Horizontal axis
フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) A01D 34/64 A01B 59/044 Continuation of front page (58) Field surveyed (Int. Cl. 7 , DB name) A01D 34/64 A01B 59/044
Claims (1)
下部の機体左右方向の横軸芯（Ｐ１）周りに、支持アー
ム（７）を上下揺動操作自在に支持して、前記支持アー
ム（７）を機体フレーム（３）の中央下側に配置された
モーア（６）側に延出し、前記モーア（６）の前側又は
後側の部分における前記支持アーム（７）の横軸芯（Ｐ
１）とは反対側の部分に、前記支持アーム（７）の先端
側を枢支連結すると共に、 前記モーア（６）の前側又は後側の部分において、前記
支持アーム（７）の先端側が枢支連結された部分とは反
対側の部分の機体左右方向の横軸芯（Ｐ２）周りに、連
係リンク（８）を前後揺動自在に支持し、前記支持アー
ム（７）の中程部の機体左右方向の横軸芯（Ｐ３）周り
に、天秤アーム（９）を上下揺動自在に支持して、 前記天秤アーム（９）の一端と前記連係リンク（８）の
揺動端とを枢支連結し、前記天秤アーム（９）の他端
を、機体フレーム（３）側の固定部（１０）の下面に前
後移動自在に下側から当て付けてあるミッドマウント型
の乗用型芝刈機。1. A support arm (7) which is vertically oscillatingly operable around a horizontal axis (P1) in a lateral direction of a body at a lower front side or a lower rear side of a body frame (3). (7) extends to the side of the mower (6) arranged below the center of the fuselage frame (3), and the horizontal axis of the support arm (7) at the front or rear part of the mower (6). P
The distal end of the support arm (7) is pivotally connected to the part opposite to 1), and the distal end of the support arm (7) is pivotally connected to the front or rear part of the mower (6). A link (8) is supported so as to be able to swing back and forth around a horizontal axis (P2) in the lateral direction of the body on a side opposite to the part connected and supported, and is provided at a middle portion of the support arm (7). A balance arm (9) is supported so as to be vertically swingable around a horizontal axis (P3) in the lateral direction of the machine body, and one end of the balance arm (9) and a swing end of the link (8) are pivoted. A mid-mounted riding lawn mower in which the other end of the balance arm (9) is connected to the lower surface of the fixing portion (10) on the body frame (3) side so as to be movable back and forth from below.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24404293A JP3271837B2 (en) | 1993-09-30 | 1993-09-30 | Mid-mounted riding lawn mower |
| US08/246,818 US5410865A (en) | 1993-09-30 | 1994-05-20 | Mid-mount type riding lawn tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24404293A JP3271837B2 (en) | 1993-09-30 | 1993-09-30 | Mid-mounted riding lawn mower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0795808A JPH0795808A (en) | 1995-04-11 |
| JP3271837B2 true JP3271837B2 (en) | 2002-04-08 |
Family
ID=17112857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24404293A Expired - Lifetime JP3271837B2 (en) | 1993-09-30 | 1993-09-30 | Mid-mounted riding lawn mower |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US5410865A (en) |
| JP (1) | JP3271837B2 (en) |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4440825A1 (en) * | 1994-11-15 | 1996-05-23 | Amazone Machines Agricoles Sa | Mowing, scarifying and / or collecting device |
| AUPO674397A0 (en) * | 1997-05-12 | 1997-06-05 | Rover Mowers Limited | Improvements relating to mowers |
| JP3474103B2 (en) * | 1998-05-26 | 2003-12-08 | 株式会社クボタ | Mower suspension equipment for lawn mowers |
| US6988351B2 (en) | 1998-11-13 | 2006-01-24 | Shivvers Group, Inc. | Midmount mower apparatus with raiseable and accessible mower deck |
| US6434919B2 (en) * | 1998-11-13 | 2002-08-20 | Shivvers Group Incorporated | Raiseable mower deck |
| US6658831B2 (en) * | 2000-11-17 | 2003-12-09 | Wright Manufacturing, Inc. | Power lawn mower with deck lift system |
| US6810648B2 (en) * | 2001-08-22 | 2004-11-02 | Deere & Company | Lawn mower deck vertical movement limiter |
| US7028456B2 (en) * | 2003-07-14 | 2006-04-18 | Shivvers Group, Inc. | Mower with flip up mowing deck |
| US7596936B2 (en) * | 2003-07-14 | 2009-10-06 | Shivvers Group, Inc. | Mower deck placed in maintenance and varying height positions |
| JP4537897B2 (en) * | 2005-06-27 | 2010-09-08 | 株式会社クボタ | Mower |
| US7240470B2 (en) * | 2005-07-21 | 2007-07-10 | Deere & Company | Drive over mower deck |
| JP4753361B2 (en) * | 2005-12-14 | 2011-08-24 | ヤンマー株式会社 | Elevating link structure |
| US7685800B2 (en) | 2007-03-30 | 2010-03-30 | Kubota Corporation | Climb-up assist structure for mower unit |
| JP4934511B2 (en) * | 2007-06-05 | 2012-05-16 | 株式会社クボタ | Work vehicle lowering regulation structure for work vehicles |
| US7716906B2 (en) * | 2008-01-04 | 2010-05-18 | Deere & Company | Single lever mower deck height-of-cut control |
| JP2012178983A (en) * | 2011-02-28 | 2012-09-20 | Iseki & Co Ltd | Lawn mower |
| US20150107212A1 (en) * | 2013-10-18 | 2015-04-23 | Yanmar Co., Ltd. | Lifting link mechanism |
| US20150121832A1 (en) * | 2013-11-01 | 2015-05-07 | Amerequip Corporation | Adjustment mechanism for lawn mower deck attached to a tractor |
| US9693501B2 (en) | 2014-08-06 | 2017-07-04 | Shivvers Group Incorporated | Mower with scissor lift mowing height adjustment mechanism |
| EP3531818B1 (en) * | 2017-04-04 | 2022-09-14 | Husqvarna AB | Riding lawn care vehicle with cutting deck height adjustment system |
| US10609863B2 (en) | 2017-08-01 | 2020-04-07 | Deere & Company | Mower deck gauge wheel adjustment mechanism |
| US10999970B2 (en) * | 2019-03-26 | 2021-05-11 | Deere & Company | Front PTO implement auto connect system |
| JP7156255B2 (en) * | 2019-11-19 | 2022-10-19 | 井関農機株式会社 | work vehicle |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2928223A (en) * | 1956-07-20 | 1960-03-15 | Danuser Machine Works Inc | Tractor mounted rotary mower attachment |
| US3283486A (en) * | 1964-05-01 | 1966-11-08 | Int Harvester Co | Implement supporting and lift linkage |
| US3483684A (en) * | 1967-07-11 | 1969-12-16 | Gilson Brothers Co | Mounting linkage for rotary mowers |
| US3680880A (en) * | 1970-06-08 | 1972-08-01 | Case Co J I | Implement mounting and lift arrangement |
| US3654749A (en) * | 1970-10-05 | 1972-04-11 | Sperry Rand Corp | Mower mounting linkage |
| US4120136A (en) * | 1976-12-27 | 1978-10-17 | Massey-Ferguson Inc. | Implement supporting and lifting linkage |
| US4869057A (en) * | 1987-05-26 | 1989-09-26 | Mtd Products Inc. | Mower deck height and angle control |
| US5351467A (en) * | 1993-07-26 | 1994-10-04 | Noma Outdoor Products, Inc. | Height adjustment mechanism for riding mower cutting deck |
-
1993
- 1993-09-30 JP JP24404293A patent/JP3271837B2/en not_active Expired - Lifetime
-
1994
- 1994-05-20 US US08/246,818 patent/US5410865A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US5410865A (en) | 1995-05-02 |
| JPH0795808A (en) | 1995-04-11 |
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